Learning Resources for Kotlin

Learning a new language is always a good investment in the modern era but learning the right language can change your career and how you live your professional life. It can unlock a lucky door into your career. 

Kotlin is an open source, statically typed, a general purpose programming language that runs on JVM. It is introduced by JetBrains, the official designer of the most intelligent Java IDE, named IntelliJ IDEA. It combines object-oriented programming and functional features into a unique platform. can give you the pleasure you fell when you are learning to program and it helps you to get your things done. Kotlin's main advantage is the JVM, it means that even as a new language, it has a better range of libraries and a better runtime than just about everything else. Kotlin is basically like writing Java in Swift syntax, you get all the niceties of Java, but write it in a language more like Swift in that it has a lot of syntactic sugar, type inference, and some cool features. Some of the topmost features of Kotlin are:

  • Open Source - Kotlin is open source under Apache License.
  • Interoperable with Java - You can use Kotlin programs inside Java project and vice-versa.
  • Tool Friendly - You can choose any Java IDE to write Kotlin program.
  • Safe - Since it is statically typed language, it gives more flexibility to catch errors at run time.
  • Easy To Learn - It's easy to learn and understand.
  • Concise - It removes so many boilerplate codes as compared with Java.


Tools : 

  • IDEs: There are many IDEs that allows you to develop with Kotlin: IntelliJ IDEA and Android Studio 3 supports it natively, while there is a plugin for the previous versions of Android Studio and Eclipse.
  • Standalone Compiler: You can also use the command line and a standalone compiler.
  • Kotlin Educational Plugin: JetBrains released a plugin for their famous IDE IntelliJ IDEA that allows you to take programming courses. They also made one available: Kotlin Koans.


Tutorials :

  • Kotlin Mega Tutorial: This is everything all you need to learn Kotlin. Go step-by-step and learn more effectively.
  • Official Tutorials: A series of complete step-by-step tutorials to walk you through how to accomplish different tasks in Kotlin, from Getting Started to writing Android applications and more. This is the best place to getting started in every Kotlin endeavor from Java to JavaScript.
  • Kotlin Javascript Tutorial: This is an ongoing video series of tutorial on using Kotlin in the JavaScript world. 
  • Kotlin Tutorial: A complete video tutorial to start using Kotlin more easily.
  • 10 Kotlin Tricks in 10-ish Minutes: This is all about the features of Kotlin presenting in a friendly way. 
  • Kotlin Academy: This is the site with a mission to simplify Kotlin learning. Take a look and get updated along with the features and trends.


Courses :

  • Kotlin for Beginners: Learn Programming with Kotlin, this is a course which will help you to learn Kotlin from scratch. You will learn the basic features and concepts behind programming and the Kotlin language.
  • Introduction to Kotlin for Java Developers: Learn Kotlin, modern language for the JVM in a more efficient way. Though it sounds like an introductory course but it will teach you Kotlin in a detailed way. 
  • Kotlin Fundamentals: Kotlin brings modern idioms to the Java platform and reduces the amount of code needed to develop software. This course will teach you all the aspects of the Kotlin language. In this course, you'll get an in-depth look at using Kotlin applications with no prior Kotlin knowledge needed. First, you'll discover how to use Kotlin for functional programming. Next, you'll explore the reification of generic types. Then, you'll get a better understanding of immutability and null checks in Kotlin. Finally, you'll wrap up the course by learning how to use higher-order functions. By the end of this course, you'll know the syntax and features of Kotlin. 
  • Introduction to Kotlin Programming: Get a full tour of language basics and learn to start writing Kotlin code. Gain an in-depth understanding of why Android developers flock to Kotlin. Understand the advantages of Kotlin compared to Java and Scala. 
  • Advanced Kotlin Programming: Understand the approach that makes Kotlin so extensible and unique compared to other JVM languages. Examine advanced topics like infix functions, tail recursion, and lambda extensions. Explore the inventive features Kotlin offers for working with classes. Learn how Kotlin handles concerns related to delegation. Dive deep into issues related to generics - constraints, covariance, and more. Discover the techniques Kotlin employs for metaprogramming and introspection. Understand how Kotlin implements asynchronous programming using co-routines.


Books :

Books are the best supplement for learning anything well concisely. It will provide everything you need and make yourself a pro. Books are the best comprehensive reference and it will provide you the complete outline in brief. There are several books written by the experts which will help you to go through step-by-step. Make a start and shape up your plan to learn in a more efficient and effective way.


  • Kotlin in Action: It teaches you to use the Kotlin language for production-quality applications. This book is suitable for experienced Java developers, this example-rich book goes further than most language books, covering interesting topics like building DSLs (Domain Specific Languages) with natural language syntax. The authors are core Kotlin developers, so you can trust them without any hesitation.
  • Programming Kotlin: It covers all aspects of the language with a particular focus on server-side development. The book is for existing Java developers who want to learn more about an alternative JVM language. If you want to see what Kotlin has offered, this book is ideal for you.
  • Fundamental Kotlin: This book is focused on the language's most important features and aspects. The book doesn't go into too much theory since it's focused on exact examples of notes and code provided. This book is for developers and for people who are on their way to become developers.
  • Modern Web Development with Kotlin: This book is about Web development with Kotlin. It covers just enough basics to get started but mostly concentrates on the practical aspect of using the language. In particular, it guides you through the process of building a technology-packed Web application while using popular backend and frontend technologies.


For learning Kotlin in more detail, you can take a look at: ''Best Books for Learning Kotlin".

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